Math, asked by rashmibhandari20, 6 months ago

Date
Page
Prove that:-
COSA
1-sina
tros A = 2Seck
It sina
Nep

Answers

Answered by ssgurjar060

1

Answer:

Date

Page

Prove that:-

COSA

1-sina

tros A = 2Seck

It sina

Nep

Answered by subhranildutta68

1

Answer:

LHS : 1+sinAcosA+cosA1+sinA=(1+sinA)(cosA)cos2A+(1+sinA)2

=(1+sinA)(cosA)1+sin2A+cos2A+2sinA=(1+sinA)(cosA)2+2sinA

=(1+sinA)(cosA)2(1+sinA)=cosA2=2secA

=RHS.

Step-by-step explanation:

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